NJM Adjustable Low Dropout Regulator w/reverse Current Protection

Transcription

1 NJM Adjustable Low Dropout Regulator w/reverse Current Protection GENERAL DESCRIPTION The NJM is a ma output low dropout adjustable type voltage regulator. The available setting voltage range is very wide from.v to 7V. This product has Reverse Current Protection without external SBD. Advanced Bipolar technology achieves low noise, high ripple rejection and high supply voltage. It is suitable for various applications such as car AVN, any consumer products and so on. PACKAGE OUTLINE NJMF NJMKH FEATURES Output Voltage Setting Range.V to 7V Reference Voltage Accuracy.5V. Output Current ma (min.) ma (typ.) Correspond to Low ESR capacitor (MLCC). F: (Vo.V) Low Dropout Voltage.V Input Voltage Range.V to 8V ON/OFF Control Reverse Current Protection Circuit Thermal Shutdown Circuit Over Current Protection Circuit (OCP) Bipolar Technology Direct Replacement to TK (8 degree rotated) Package Outline SOT---, DFN-H(ESON-H) PIN CONFIGURATION 5 NJM. CONTROL. GND. Noise Bypass. V OUT 5. V ADJ. V IN Should be noted the device direction when replacing from TK. 5 NJM. V IN. V ADJ. V OUT. Noise Bypass 5. GND. CONTROL Exposed Pad(Rear PAD) should be connect to GND BLOCK DIAGRAM V IN V OUT CONTROL Reverse Current Protection Thermal Protection Bandgap Reference Noise Bypass V ADJ GND Over Current Protection Ver

2 NJM ABSOLUTE MAXIMUM RATINGS (Ta=5 C) PARAMETER SYMBOL MAXIMUM RATING UNIT Input Voltage V IN. to V Output Voltage V OUT. to 9 V Control Pin Voltage V CONT. to V Output Adjust Pin Voltage V ADJ. to V Noise Bypass Pin Voltage (*5) V NB. to V SOT-- 5(*) Power Dissipation P D 7(*) 5(*) (*) DFN-H (ESON-H) Operating Temperature Range Topr to 85 C Storage Temperature Range Tstg to 5 C (*): Mounted on glass epoxy board. (7...mm: based on EIA/JDEC standard, Layers) (*): Mounted on glass epoxy board. (7...mm: based on EIA/JDEC standard, Layers),internal Cu area: 7. 7.mm (*): Mounted on glass epoxy board (.5.5.mm: based on EIA/JEDEC standard, Layers FR-, with Exposed Pad) (*): Mounted on glass epoxy board (.5.5.mm: based on EIA/JEDEC standard, Layers FR-, with Exposed Pad) (Layers: Applying mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD5-5) (*5): When input voltage is less than V, the absolute maximum control voltage is equal to the input voltage. mw RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Input Voltage Range V IN. - 8 V Output Voltage Range V OUT. - 7 V ELECTRICAL CHARACTERISTICS (Unless other noted, V IN =V, R=5k, R=8k, C IN =. F, C O =. F(V O <.V:. F), Cp=. F, Cfb=pF, Ta=5 C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Reference Voltage Vref I O =ma..5. V Quiescent Current I Q I O =ma, except Icont - A Quiescent Current at OFF-state I Q(OFF) V CONT =V - - na Ground Current I GND I O =5mA ma Output Current I O V O.V - ma Line Regulation V O / V IN V IN = V O V to V O V, I O =ma - -. /V Load Regulation V O / I O I O = to ma - -. /ma Dropout Voltage(*) V I-O I O =ma -..5 V Control Voltage at ON-state V CONT(ON). - - V Control Voltage at OFF-state V CONT(OFF) - -. V Control Current I CONT V CONT =.V - A Ripple Rejection RR ein=mvrms,f=khz, I O =ma, V O =V setting db Average Temperature Coefficient of Output Voltage Output Noise Voltage V O / Ta Ta= C to 85 C, I O =ma ppm/ C V NO (*):Except setting Output Voltage less than.v. f=hz to 8kHz, I O =ma, V O =V setting - - Vrms - - Ver.5--7

3 NJM POWER DISSIPATION vs. AMBIENT TEMPERATURE SOT--- Pow er Dissipation (Topr=- to +85 C,Tj=5 C) Pow er Dissipation P D (mw) on layers board 5 on layers board Temperature : Ta(⁰C) DFN-H(ESON-H) Power Dissipation (Topr=- to +85ºC,Tj=5ºC) Power Dissipation P D (mw) on layers board on layers board Temperature : Ta(ºC) Ver

4 NJM TEST CIRCUIT V IN A I IN C IN=. F V IN NJM V OUT C O=. F(*) (ceramic) Cfb=pF R I OUT V V OUT V ADJ V A V CONT I CONT CONTROL GND Noise Bypass Cp=. F R (*7): V O <.V:. F - - Ver.5--7

5 NJM TYPICAL APPLICATION. In the case where ON/OFF Control is not required: V IN V IN V OUT Cfb=pF V OUT. F NJM. F (*8) R CONTROL GND V ADJ Noise Bypass Cp=. F R Connect CONTROLl pin to V IN pin (*8): V O <.V:. F. In use of ON/OFF CONTROL: V IN V IN V OUT V OUT. F NJM. F (*9) Cfb=pF R CONTROL GND V ADJ Noise Bypass Cp=. F R State of CONTROL pin: H output is enabled. L or open output is disabled. (*9): V O <.V:. F [Output voltage setting formula] R R VOUT Vref R Vref.5V.V ( typ) V OUT ( typ) 7.V R value should be selected between k and k. Ver

6 NJM * Input Capacitor C IN Input Capacitor C IN is required to prevent oscillation and reduce power supply ripple for applications when high power supply impedance or a long power supply line. Therefore, use the recommended C IN value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V IN as shortest path as possible to avoid the problem. * Output Capacitor C O (MLCC) Output capacitor (C O ) will be required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator. Use of a smaller C O may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. On the other hand, Use of a larger C O reduces output noise and ripple output, and also improves output transient response when rapid load change. Therefore, use the recommended C O value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between GND and V OUT as shortest path as possible for stable operation The recommended capacitance depends on the output voltage rank. Especially, low voltage regulator requires larger C O value. In addition, you should consider varied characteristics of capacitor (a frequency characteristic, a temperature characteristic, a DC bias characteristic and so on) and unevenness peculiar to a capacitor supplier enough. When selecting C O, recommend that have withstand voltage margin against output voltage and superior temperature characteristic though this product is designed stability works with wide range ESR of capacitor including low ESR products. * Noise bypass Capacitor Cp Noise bypass capacitor Cp reduces noise generated by band-gap reference circuit. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp recommended value larger (refer to conditions of ELECTRIC CHARACTERISTIC) to avoid the problem. * Reverse Current Protection NJM is built in Reverse Current Protection circuit. So external Schottky barrier diode(sbd) is not required that this circuit prevents the large reverse current due to the output voltage being higher than the input voltage. - - Ver.5--7

7 NJM CHARACTERISTICS Quiescent Current [μa] 5 9 Quiescent Current vs.input Voltage V OUT Output is open Co, R & R : refer to right table Cfb=pF include Icont V OUT =.V: C O =. F, R=5k, R=k.V: C O =. F, R=5k, R=8k 7V: C O =. F, R=5k, R=k V OUT =.V 5 5 Input Voltage [V] Load Regulation vs.output Current V OUT =.V Load Regulation vs.output Current V OUT =.V -5-5 Load Regulation [mv] C V IN =.V Co=.uF(Ceramic) R=kΩ Cfb=pF Load Regulation [mv] C V IN =.V Co=.uF(Ceramic) R=8kΩ Cfb=pF - - Load Regulation [mv] Load Regulation vs.output Current V OUT C V IN =8V Co=uF(Ceramic) R=kΩ Cfb=pF Dropout Voltage [V] Dropout Voltage vs.output Co, R & R : refer to above table Cfb=pF V OUT =7V Ver

8 NJM CHARACTERISTICS Io=mA Output Voltage vs.input Voltage V OUT =.V C Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF CONT=V IN Io=mA...9 Output Voltage vs.input Voltage V OUT =.V Io=mA C Cin=.uF(Ceramic) Co=.uF(Ceramic) R=8kΩ Cfb=pF CONT=V IN Io=mA. Io=mA Input Voltage [V].8 Io=mA Input Voltage [V] Output Voltage vs.input Voltage C Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF CONT=V IN Io=mA Io=mA Io=mA Io=mA Input Voltage [V] Control Current [μa] 8 8 Control Current vs.control C V IN =V OUT +V This characteristic is shared by all voltage ranks. Control Voltage [V] Control Voltage vs.output Voltage V OUT C V IN =V OUT +V Cin=.uF(Ceramic) R=8kΩ Cfb=pF Io=mA Control Voltage [V] Ver.5--7

9 NJM CHARACTERISTICS Ground Pin Current [ma] 8 8 Ground Pin Current vs.output Cin=.uF Co, R & R : refer to right table Cfb=pF V IN =.V V OUT =.V V IN =8V V OUT =7V V IN =V V OUT =.V: C O =. F, R=5k, R=k.V: C O =. F, R=5k, R=8k 7V: C O =. F, R=5k, R=k Over Current Protection Characteristic V OUT C Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF Over Current Protection C Cin=.uF(Ceramic) Co=uF(Ceramic) R=8kΩ Cfb=pF Over Current Protection Characteristic V OUT C Cin=.uF(Ceramic) Co=uF(Ceramic) R=kΩ Cfb=pF 5 Ver

10 NJM CHARACTERISTICS Ripple Rejection Ratio [db] 8 Ripple Rejection Ratio vs.frequency V OUT =.V Io=mA Io=mA V IN =.V ein=mvrms Co=.uF(Ceramic) R=kΩ Cfb=pF Io=mA Io=mA k k k Frequency [Hz] Ripple Rejection Ratio [db] 8 Ripple Rejection Ratio vs.frequency V OUT =.V Io=mA Io=mA Io=mA Io=mA V IN =V ein=mvrms Co=uF(Ceramic) R=8kΩ Cfb=pF k k k Frequency [Hz] Ripple Rejection Ratio vs.frequency V OUT =7V Ripple Rejection Ratio [db] 8 Io=mA Io=mA Io=mA Io=mA V IN =8V ein=mvrms Co=.uF(Ceramic) R=kΩ Cfb=pF k k k Frequency [Hz] Ripple Rejection Ratio vs.frequency V OUT =.V, C O variable Ripple Rejection Ratio [db] V IN =V ein=mvrms R=8kΩ Cfb=pF Io=mA Co=.uF(Ceramic) Co=.7uF(Ceramic) Co=uF(Ceramic) k k k M Frequency [Hz] - - Ver.5--7

11 NJM CHARACTERISTICS Ripple Rejection Ratio vs.output Current V OUT =.V Ripple Rejection Ratio vs.output Current V OUT =.V Ripple Rejection Ratio [db] 8 f=khz V IN =.V ein=mvrms Co=uF(Ceramic) Ripple Rejection Ratio [db] 8 f=khz V IN =V ein=mvrms Co=.uF(Ceramic).... Ripple Rejection Ratio [db] 8 Ripple Rejection Ratio vs Output Current V OUT =7V f=khz V IN =8V ein=mvrms Co=.uF(Ceramic).. Ver

12 NJM CHARACTERISTICS Output Noise Voltage [μvrms] Output Noise Voltage vs.output Current V OUT C V IN =.V Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF LPF:8Hz.. Output Noise Voltage [μvrms] Output Noise Voltage vs.output Current V OUT C V IN =.V Cin=.uF(Ceramic) Co=.uF(Ceramic) R=8kΩ Cfb=pF LPF:8Hz Output Noise Voltage [μvrms] 8 8 Output Noise Voltage vs.output Current V OUT C V IN =8V Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF LPF:8Hz.. Output Noise Voltage [μvrms] Output Noise Voltage vs.noise Bypsaa Capacitance V OUT V IN =CONT=.V Cin=.uF(Ceramic) Cin=.uF(Ceramic) R=8kΩ Cfb=pF Io=mA.E- p.e- p.e-8.μ.e- μ Noise Bypass Capacitance [F] - - Ver.5--7

13 NJM CHARACTERISTICS Equivalent Serise Resistance vs.output Current V OUT =.V Equivalent Serise Resistance vs.output Current V OUT =.V Equivalent Serise Resistance [Ω]. V IN =8V V IN Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF Equivalent Serise Resistance [Ω]. V IN =8V V IN Cin=.uF(Ceramic) Co=.uF(Ceramic) R=8kΩ Cfb=pF.... Equivalent Serise Resistance vs.output Current V OUT =7V Equivalent Serise Resistance [Ω]. V IN Cin=.uF(Ceramic) Co=.uF(Ceramic) R=kΩ Cfb=pF... Ver

14 NJM CHARACTERISTICS Reference Voltage [V] Reference Volatage vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V Io=mA Output Voltage vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V Io=mA Quiesent Current [μa] Quiesent Current vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V Output is open Ground Current [ma] 8 8 Ground Current vs.ambient Co=.uF R=.kΩ Cfb=pF Cp=.uF V IN =V Io=mA Io=mA Io=5mA Dropout Voltage [V].8... Dropout Voltage vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.uF I O =ma I O =ma Ver.5--7

15 NJM CHARACTERISTICS Control Current [μa] 8 Control Current vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.F V IN =V Vcont=.V Contol Voltage [V] Control Voltage vs. Temperature V CONT =OFF V CONT Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V Line Regulation [%/V] Line Reglation vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V to 9V Io=mA Load Regulation [%/ma] Load Reglation vs.ambient Co=.uF R=8kΩ Cfb=pF Cp=.unF V IN =V Io=mA to ma Output Peak Current vs.ambient Temperature Thermal Shutdown Characteristic Output Peak Current Co=.uF R=8kΩ Cfb=pF Cp=.uF V O =V OUTtyp) 9% V IN Co=.uF R=8kΩ Cfb=pF Cp=.uF V IN =V Io=mA Ver

16 NJM CHARACTERISTCS ON/OFF Transient Response (tr) ON/OFF Transient Response (tf) VOUT=V, VIN=V, Cp=.uF, Cfb=pF,, R=8kΩ, Io=mA VOUT=V, VIN=V, Cp=.uF, Cfb=pF,, R=8kΩ, Io=mA Co=uF Output Voltage Co=.uF -8 Co=.7uF Co=.7uF Co=uF Time [μs] Time [μs] ON/OFF Transient (tr) ON/OFF Transient Response (tf) VOUT=V, VIN=V, Cp=.uF, Cfb=pF,, R=8kΩ, Io=mA VOUT=V, VIN=V, Cp=.uF, Cfb=pF,, R=8kΩ, Io=mA Control Voltage 7 Control Voltage Co=uF - Co=.uF -8 Co=.7uF Output Voltage Output Voltage - Co=.uF Co=.7uF Co=uF Time [μs] Time [μs] ON/OFF Transient Response (tr) ON/OFF Transient Response (tr) VOUT=V, VIN=V, Co=uF, Cfb=pF,, R=8kΩ, Io=mA VOUT=V, VIN=V, Co=uF, Cfb=pF,, R=8kΩ, Io=mA Control Voltage Control Voltage Output Voltage - Cp=.uF Cp=.uF Time [μs] -8 Control Voltage [V] - Co=.uF Output Voltage Control Voltage [V] - Output Voltage - Cp=.uF Cp=.uF Control Voltage [V] Control Voltage [V] 5 Control Voltage Control Voltage [V] 7 Control Voltage Control Voltage [V] Time [μs] Ver.5--7

17 NJM CHARACTERISTICS 7 Line Trangent Response, Cp=.uF, Cfb=pF, C IN =.uf, Co=.uF,, R=8kΩ, Io=mA Input Voltage Output Voltage Input Voltage [V] Time [μs] 7 Load Trangent Response, V IN =V, Cp=.uF, Cfb=pF, C IN =.uf, Co=.uF,, R=8kΩ, 5 Output Current Output Voltage Time [μs] Ver

18 NJM PACKAGE OUT LINE SOT---.9±. ~.9± ± ±...5±..±...MAX NOTES All linear dimensions are in millimeters. UNIT:mm Ver.5--7

19 NJM DFN-H (ESON-H) NOTES All linear dimensions are in millimeters. UNIT:mm Ver

20 NJM [CAUTION] The specifications on this datasheets are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this datasheets are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. - - Ver.5--7